For Tunnies benefit, my earlier post was between showering and brushing. I often post whilst doing other things... If I have the time to write an essay, I will. Equally if I don't I try to be succinct.
The Japs don't do burger vans smacked of snobbish assumption, hence my choice of words.
Infinity don't do tow bars because the Americans do 99.9% of their towing with v8 pick ups... Even BMW struggle to sanction towing in the US, yet everywhere else tow bars are factory options.
The weight issue is a bigger one as most cars now have a considerable proportion of composite and aluminum in their design.
If you need a heavy tow car, then you might have to buy one... ie a large SUV... A late R Class might do it as a compromise